When a group of marine biologists crash land in the Bermuda Triangle, they realize they have stumbled into the lost city of Atlantis. But they quickly discover the city isn't friendly, and its humanoid inhabitants are planning worldwide domination using the piles of weapons and technology that have fallen through the Triangle over the centuries.

A disaffected American soldier asserts to his superiors that an enemy combatant is innocent, only to discover his new friend may be concealing a far more sinister secret.